If available, see below for a list of known police frequencies for Williamson County in Illinois. Or, navigate to your city or town to view your local city and/or police frequencies within Williamson County, Illinois.
| Frequency | Description | Agency | |
|---|---|---|---|
| 154.875 | Williamson County Sheriff - Dispatch | Williamson County Sheriff | |
| 857.7625 | Williamson County Sheriff - Dispatch | Williamson County Sheriff |
| Bush | Cambria | Carterville | Colp | |
| Crainville | Creal Springs | Energy | Freeman Spur | |
|
| ||||
| Herrin | Hurst | Johnston City | Marion | |
| Pittsburg | Spillertown | Whiteash | ||
Detect police activity and stay ticket-free in Williamson County with these police radar detectors.